babel-preset-es2015-ie

6.7.0 verified Sat Apr 25 auth: no javascript deprecated

A Babel preset that includes all ES2015 plugins with additional transforms to ensure compatibility with Internet Explorer 9 and 10. Version 6.7.0 is the latest stable release, designed for Babel 6. It wraps the official babel-preset-es2015 and adds IE-specific polyfills or transforms for features like default parameters, destructuring, and spread operators that are not fully supported in older IE versions. Unlike the base preset, it targets IE>=9 specifically, making it suitable for legacy enterprise applications. The package is no longer actively maintained as Babel 6 is deprecated in favor of Babel 7 and @babel/preset-env.

Common errors

error Error: Couldn't find preset "es2015-ie" relative to directory ↓

cause The preset is not installed or not in node_modules.

fix

Run npm install --save-dev babel-preset-es2015-ie

error Error: Requires Babel "^6.0.0-0" but was loaded with "7.x". ↓

cause Using the preset with Babel 7 instead of Babel 6.

fix

Downgrade to Babel 6 or migrate to @babel/preset-env.

error SyntaxError: Unexpected token import (or arrow function etc.) ↓

cause The preset is correctly configured but some modern syntax (e.g., dynamic imports) is not covered.

fix

Add additional presets or plugins (e.g., babel-plugin-syntax-dynamic-import).

Warnings

deprecated babel-preset-es2015-ie is deprecated; Babel 6 is end-of-life. Use @babel/preset-env with IE targets instead. ↓

fix Migrate to Babel 7 and use @babel/preset-env with targets: { ie: '9' }.

gotcha The preset does not include a polyfill for Promise, Map, Set, etc. Those must be added separately (e.g., babel-polyfill). ↓

fix Add import 'babel-polyfill' or configure core-js polyfills in Babel 7.

breaking This preset is designed for Babel 6 only. It will not work with Babel 7 (which uses @babel/ scoped packages). ↓

fix Upgrade to @babel/preset-env and use Babel 7.

Install

npm install babel-preset-es2015-ie

yarn add babel-preset-es2015-ie

pnpm add babel-preset-es2015-ie

Imports

Default (as preset)
wrong
```
{
  "presets": ["babel-preset-es2015-ie"]
}
```
correct
```
{
  "presets": ["es2015-ie"]
}
```
In .babelrc or Babel config, use the preset name without the 'babel-preset-' prefix.

Default (Node API)

wrong

var preset = require('babel-preset-es2015-ie');
require('babel-core').transform('code', { presets: [preset] })

correct

require('babel-core').transform('code', { presets: ['es2015-ie'] })

When using the Node API, pass the preset name as a string, not the required module.

Via CLI

wrong

babel script.js --presets babel-preset-es2015-ie

correct

babel script.js --presets es2015-ie

CLI also expects the short preset name.

Quickstart

Shows installation, configuration in .babelrc, and a basic ES2015 arrow function/map example that will be transpiled for IE9+.

// Install the preset
// npm install --save-dev babel-preset-es2015-ie

// .babelrc
{
  "presets": ["es2015-ie"]
}

// Example ES2015 code (will be transpiled for IE9+)
const sum = (a, b) => a + b;
let numbers = [1, 2, 3];
let doubled = numbers.map(n => n * 2);
console.log(doubled);